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The Images section checks raster images placed inside a PDF (not standalone image uploads — those use a Raster profile). Effective resolution is measured at the image’s placed size, so a high-megapixel photo scaled up on the page can still fail. Each check lists its action, settings, and the messages the customer sees. See the profile overview for how actions work.

Minimum Resolution

The lowest acceptable effective resolution (DPI) at print size.
FieldDetail
ActionWarn
SettingsMinimum (dpi, default 150)
IssueOne or more images are too low-resolution ({actual.min} DPI) and will look blurry in print. The minimum is {target.effective} DPI at print size.
FixReplace the low-resolution images with higher-resolution versions and re-upload.

Maximum Resolution

Flag images that are unnecessarily high-resolution, which bloat the file without improving print.
FieldDetail
ActionAuto-fix
SettingsWarn above (dpi, default 600)
IssueSome images have higher resolution than needed ({actual.max} DPI), which makes your file larger without improving print quality.
FixDownsample the oversized images and re-upload.
Auto-fixWe’ll downsample the oversized images automatically before printing.

Image Color Mode

Which color spaces are allowed for placed images. To convert image colors, use Colors → Document Color Mode with “Convert all” (dedicated image auto-fix here is coming soon).
FieldDetail
ActionWarn
SettingsAllowed (CMYK / Grayscale / RGB)
IssueOne or more images are in {actual.colorspaces} color space, but we require images to be in {target.allowed} for this product.
FixConvert the images to {target.allowed} and re-upload.

Image Compression

Which image compression formats are supported.
FieldDetail
ActionWarn
SettingsDisallowed (JPEG, JPEG 2000, Flate/Zip, LZW, CCITT, JBIG2, Uncompressed)
IssueYour file contains images saved with a compression format we don’t support.
FixRe-save the images with a supported compression format and re-upload.
Auto-fixWe’ll re-encode the images with supported compression automatically before printing.

Bit Depth

The minimum color bit depth required for images, to avoid banding.
FieldDetail
ActionReject
SettingsMinimum (1 / 2 / 4 / 8 / 16 bit, default 8)
IssueOne or more images have too low a color depth, which can cause banding. Use {target.min}-bit or higher.
FixRe-save your images at a higher bit depth and re-upload.